I can not find it in this years regs but I did find this in last years regs:
Iowa Wildlife Management Areas
Requiring Nontoxic Shot for All
Hunting
(excluding deer and wild turkey)
Benton County, Iowa River
Corridor; Boone County, Harrier
Marsh WMA; Buena Vista
County, all state and federal areas
except Bluebird Access; Calhoun,
South Twin Lake; Cerro Gordo
County, all state and federal areas;
Clay County, all state and federal
areas except Burr Access, Dry
Mud Lake, Little Sioux, Highbridge
and Fen Valley WMAs, and the
Ocheyedan WMA target shooting
range; Dickinson County, all state
and federal areas except the Spring
Run WMA target shooting area;
Emmet County, all state and
federal areas except Birge Lake,
Grass Lake and Ryan Lake WMAs,
and the East Des Moines River
Access; Franklin County, all state
and federal areas; Greene County,
all state and federal areas except
Rippey Access and McMahon
Access; Guthrie County, McCord
Pond, Lakin Slough and Bays Branch
WMAs, excluding the target shooting
range at Bays Branch WMA.
Also, Hamilton County, Little
Wall Lake, Gordon Marsh and Bauer
Slough WMAs; Hancock County, all
state and federal areas; Humboldt
County, all state and federal areas
except Bradgate Access and Willows
Access; Iowa County, Iowa River
Corridor; Jasper County, Chichaqua
Wildlife Management Area; Kossuth
County, all state and federal areas
except Seneca Access; Osceola
County, all state and federal areas;
Palo Alto County, all state and
federal areas; Pocahontas
County, all state and federal areas
except Kalsow Prairie; Polk
County, Paul Errington Marsh
WMA and Chichaqua WMAs; Sac
County, all state and federal areas
except White Horse Access and
Sac City Access; Tama County,
Iowa River Corridor; Winnebago
County, all state and federal areas;
Worth County, all state and
federal areas; and Wright County,
all state and federal areas.
Target shooting on these
areas will also require the use of
nontoxic shot.
Ron